Assessing the Impact of Aerodynamic Modelling on Manoeuvring Aircraft

Da Ronch, Andrea, McCracken, Andrew J and Badcock, Kenneth J (2014) Assessing the Impact of Aerodynamic Modelling on Manoeuvring Aircraft. In: AIAA Atmospheric Flight Mechanics Conference, 2014-1 - 2014-1, National Harbour, Maryland, USA.

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Abstract

This paper investigates the impact of aerodynamic models on the dynamic response of a free-flying aircraft wing. Several options for the aerodynamics are evaluated, from two-dimensional thin aerofoil aerodynamics and unsteady vortex-lattice method up to computational fluid dynamics. A nonlinear formulation of the rigid body dynamics is used in all cases. Results are generated using a numerical framework that will allow in the near future multi-disciplinary fluid/structure/flight analysis. In this paper, flexibility effects are neglected. A validation for fluid/flight models is presented. The well-established approach based on stability derivatives is also used, and is found in good agreement with solutions obtained from linear aerodynamic models. The uncertainties in predicted trajectories of the free-flying wing are, in general, large and attributed to the aerodynamics only. This suggests that a careful control law synthesis should be done to account for uncertainties from modelling techniques.

Item Type:	Conference or Workshop Item (Paper)
Depositing User:	Symplectic Admin
Date Deposited:	14 Sep 2015 08:21
Last Modified:	17 Dec 2022 00:49
DOI:	10.2514/6.2014-0732
Related URLs:	Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/2025819